Home / 81,244.41-121,817.40-53,130.52

Finding the Fourth Proportional to 81,244.41, 121,817.40 and 53,130.52

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Solution

The fourth proportional to 81,244.41, 121,817.40 and 53,130.52 is: 79,663.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,244.41 : 121,817.40 = 53,130.52 : x
  2. Step 2: Convert to fraction form
    81,244.41/121,817.40 = 53,130.52/x
  3. Step 3: Cross multiply
    81,244.41x = 121,817.40 × 53,130.52
  4. Step 4: Simplify right side
    81,244.41x = 6,472,221,807.05
  5. Step 5: Solve for x
    x = 6,472,221,807.05/81,244.41
  6. Step 6: Final answer
    x = 79,663.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.